Drying-kiln-truck take-up.



A. H. IRVING & D R. TANNER. DRYING KlLN TRUCK TAKE-UP.

' APPLICATION FILED JAN- 19. 1915. I 1,154,315, PatentedSept. 21,1915.

2 3HEETS-SHEET 1.

Adam 61mg ami/l nemen and A. II. IRVING & D. R. TANNER.

DRYING KILN TRUCK TAKE-UP. APPLICATION FILED JAN- 19. I915 1 154; 315, PatentedSept. 21, 1915.

7 -2 SHEETS-SHEET 2.

amwmtw Adam /7 /rvmg NM and MONO Dan/e1 E 'irme COLUMBIA PLANOGRAPH co., WASHINGTON. D. c.

lil V WTED ETATEE PATENT @EETQE.

ADAM. H. IRVING,

OF SPOKANE, WASHINGTON, AND DANIEL BI. TANNER, OF LA RANDE, OREGON.

DRYING-KILN-TRUCK TAKE-UP.

Application filed. January 19, 1915.

To all whom it may concern:

Be it known that we, ,ADAM H. lnvinc and DANIEL R. TANNER, citizens of the United States, residing at Spokane an Grande, respectively, in the 'counties of Spokane and Union and States of \Vashington and Oregon, have invented certain new and useful Improvements in Drying- Kiln-Truck Take-Ups, of which the following is a specification.

The primary object of this invention is to maintain or eXert a substantially constant pressure on material that is being kilned or dried so as to prevent deformation as a result of shrinkage.

The device of this invention is particu larly designed for use in connection with dry kiln trucks for lumber and, as well known, the latter is arranged in stacks and wheeled in on the trucks to be kilned. lrleretofore, in the absence of means for tightly holding a stack of boards or other form of lumber, the shrinkage resulting from the kiln process, and by reason of the contraction in bulk, would cause the'boards to warp and thereby greatly reduce their immediate market value.

Considered more specifically, it is the object of this invention to equip the trucks of the dry kiln type with a set of fixed or stationary stakes, to support the stack of lumber on one side thereof, a plurality of takeup stakes engaging the stack of lumber on the opposite side in a manner to move up and tightly grip the stack other words, hold the stack between the stakes in such a manner as to prevent warpage.

A further novel and very important feature of'the invention consists in providing a plurality of take-up stakes each of which is independently under take-up stress, with respect to each other, so that irrespective of any lack of uniformity in shrinkage, the

stack of lumber will be tightly gripped be-' tween the fixed and take-up stakes.

The device of this invention has other features of novelty which will be more fully described in connection with the accomaan in drawin s and which will be more particularly pointed out'in and by the appended claims. I

In the drawings:-Figure 1 is a view in side elevation of a dry kiln truck embodying the most preferred form of the inven- Specification of Letters Patent.

of lumber, orn Patented Sept. 21, 1915..

Serial No. 3,073.

tion. Fig. 2 is an end View thereof. Fig. 3 is a sectional view on line 3-3 of Fig. 1. Fig. 1 is a perspective view of a tie line holder. Fig. 5 is a sectional view on line 5-5 of Fig. 3.

Like characters of reference designate similar parts throughout the different figures of the drawings.

hen the device of this invention is in corporated in the form of a truck, the same may consist of a plurality of sets of trucks indicated at 1, 2 and 3. Each truck consists of wheels 4, 5 and 5 and a truck frame mounted thereon, as indicated at 7, 8 and 9.

Extending transversely, and mounte upon each set of trucks, are bolsters 10, 11 and 12 all of which are similar in construction and only one of which need be described in detail. Each bolster is shown formed of two lengths of channel iron 13, the lower flanges of which may be secured to thetruck frames, rigidly, in any desired manner. The channels 13 are connected to form a rigid bolster by means which may consist of an end cap indicated at 1 1. Said cap is provided with upper and lower flanges 15 which are prop rtioned to overlap the channels 13 so as to rigidly hold the latter against relative vertical displacement. The cap 1 1 is provided with inwardly projecting lugs 16 which engage the inner faces of tie webs of thechannels 13 so as to hold the latter in predetermine spaced relation. The spacing lugs 16 are apertured for passage therethrough of bolts 17 which also extend through the web's of the channels and are secured by nuts 18. By means of the foregoing construction, one end of the bolster is made absolutely rigid. The other end of the bolster is made rigi by means which includes a fixed stake socket. indicated as a whole at 19, and disposed between the channels v13 so as to hold the latter in proper spaced relation. Bolts 20 rigidly connect the fixed stake socket with the channels 13 in a mannerwhich will be clear by reference to Fig. 2. The fixed stake socket is in all respects similar to the movable stake socket. which will now be described, except in the omission of a few slight details.

The movable stake socket comprises an open ended rectangular frame 21 having four walls within which the lower end of the stake is received and being provided a manner to permit of v stakes 24 will with inwardly projecting supporting flanges 22. The fixed stakes are indicated at 23 and the movable stakes erably formed of I-iron and the fixed and movable sockets are so proportioned and arranged that the webs of the I-beams or I-irons will be disposedtransversely of the longitudinal axis of the truck so as to afford the greatest amount of strength to the load imposed thereon. Because of the fact that the movable stake sockets are slidable between the channels 13, they are provided with supporting flanges 25 for engagement with the tops of the channels 13 so asto support the sockets 21 therebetween' and in sliding movement of the movable sockets along the bolsters. As shown more particularly in Fig. 3, the movablev socket 21 is provided with an eye 26 to which one end 27 of accntractile spring 28 is connected. The end 2? is hook-shaped to engage the eye 26 and the remaining end 29 is also hook-shaped to be connected with a spacing pipe sleeve 30 which is of sufficient length to engage the channels 13 with its ends. The sleeve 30 is supported upon 'a bolt 31 which extends through the the channels 13 nut.

Thefunction of spring 28 is to advance the movable stakes 24 toward the material to be disposed on the truck in order to maintain the movable stakes 24 in firm contact with the material irrespectiveof the amount of shrinkage in volume of the latter.

ll leans is provided for adjusting the movable stakes so that the truck can be loaded, and to prevent the springs 28 from acting until the movable stakes are released for action by their springs.

In on wall of the socket 21, asindicated and is secured thereto by a at 32, an aperture is formed for receiving the shank and head of an adjusting bolt 33, the head 34 of the bolt fitting in the recess so as to prevent rotation of the bolt with respect t6 the socket 21. The bolt 33 ex tends through a smooth bore formed the adjusting nut 35 is turned end cap 14 and an onthe threaded end of the bolt for engagement with the end cap' 14. I

-When the truck is utilized for lumber, the latter will be stacked with the boards 36 on edge and with the boards of each upright tier I suitably held in spaced relation bj" lengths of boards which areealled stickers, as'indicat'ed at 36. Before the stack of material is disposed on the bolsters, the nut 35 will be turned against the end cap 14., as regardsea'ch movable stake, and themovable stakes will be independently moved outwardly in their bolsters toward the-end caps 14, as indicated in Fig. 3. The movable be placed in their sockets and afterthe stack of lumber is disposed upon the truck, then the fixed stakes 23 will be at 24 and they are prefwebs of A v stakes, there placed in line with the fixed set in their sockets. After the fixed stakes 23 have been set in position, the nuts 35 will be turned outwardly or to the right of Fig. 2, so as to permit the springs 28 to draw the movable sockets 21 toward the material and thereby cause the movable stakes 24 to engagethe'material and clamp the same securely between the movable and fixed stakes. The springs 28 are'of sufiicient strength to bodily shift the stacks toward the fixed stakes 23. The fixed stakes 23 are supported in the sockets 19 by supporting flanges 38."

Means is also provided for connecting the upper ends of the movable and fixed stakes and such means tail. 7 I

The fixed stakes 23 are notched as indicated at 38, and in practice, we also likewise notch the movable stakes 24, as inclicated at 39, because of the fact thatthe stakes are interchangeably used in either. the fixed or movable sockets. 'Ajtie line which may be in the form of a link chain 40 is pro vided with a loop end 41 adapted for in sertion in the notch38 of the fixed stake 23.

which comprises a strip of steel'or like rigid material bent upon itself as indicated at 42 and having its sides or bent ends tied by means such as a rivet 43. The lowerv ends, or rather the terminals 44 thereof project laterally of the body of the fastener a suflic'ient distance so that when the fastener is disposed astride of the web of the movable stake 24, as indicated in Fig. 2, the terminal bent ends 44 will engage the outer I-beam anges whereas the opposite margins 45 of the forked or bifurcated portions will rest against the inner flanges of the I-beam constituting the movable stake 24. The stop 43 will limit movement of the forked 'fas-' tener'by engaging the end of the web of the stake 24. The remaining end. of the chain '40 is provided with a link 46 which is se cured in the bight orp'oint of bend 42, perm putting the-chain or tie will be mounted In order to take 'up slack due to shrinkage, at the upper ends of the is a spring 47 employed, hav liig one end secured to terminal link 46 and having its other end secured to a selected intermediate link 48, of the chain. A slack portion of the chain, as indicated at 49, will be formed adjacent the points of connection of the spring so that if the latter should break the stakes would still be connected in h a manner as to preventithe stack of lumber from falling as a result of such breakage. v

A point of advantage in this invention is that the stickers 36 may,

stake 23 and the fastener Oh i] stake 24.

and movable will now be described in deline fasteneris shown in detail in Fig. 4,.

if desired, be

end 40 will be fixed to the s i stakes so that the pressure of the stakes laterally of the stack will never have a tendency to bend the boards as a result of pressure, the pressure on the boards in this invention, being against an uninterrupted thickness of material. Furthermore, byreason of the tension on the boards of the stack, it is possible to place stickers near the free ends of the boards, as indicated at 50 so as to prevent the free ends of the boards from warping and twisting, an expedient which is not possible in cases where a constant takeup pressure is not provided.

It will be seen that the tiers of boards comprising independent bodies arranged in a stack, are acted upon by independentdevices in the form of the movable stakes and their appurtenant parts, such independent devices serving to take shrinkage and hold the boards closely together irrespective of lack of uniformity of shrinkage, thereby very greatly enhancing the value of the product treated by the kiln.

It is believed that the advantages and utility of this invention will be fully understood from the foregoing description, and while we have herein shown and described one specific form of our invention, we do not wish to be limited thereto except for such limitations as the claims may import.

lVe claim 1. In a drying kiln shrinkage take-up terial to be kilned, and automatically acting means exerting a substantially constant follow up pressure at different points along the material during shrinkage and irrespective of the extent or variation of reduction 0 volume thereof, substantially as described.

2. In a drying kiln shrinkage take-up means, mechanism for supporting the material to be kilned, and a plurality of independently acting devices exerting a follow up pressure on the material during shrinkage reduction of volume thereof, substantially as described.

3. In a drying means, mechanism for supporting a stack of bodies to be kilned, means supporting the stack on one side thereof, and a plurality of independently and automatically acting devices engaging the stack on the opposite side to maintain a substantially constant pressure on the stack during shrinkage and irrespective of the extent or variation of reduction of volume thereof, substantially as described.

4. In a drying kiln shrinkage take-up device, a dry kiln truck for supporting the material to be kilned and provided with fixed stakes, and movable stake devices for maintaining the material between said stakes under substantially constant pressure during shrinkage and irrespective of the extent or variation of reduction of volume of the material, substantially as described.

up slack due to means, mechanism for supporting the makiln shrinkage take-up 5. In a drying kiln shrinkage take-up device, a dry kiln truck for supporting a stack of material to be kilned and provided with fixed stakes for engaging the stack on one side thereof,and spring actuated movable stake devices engaging the stack on the opposite side thereof to maintain the interposed stack under substantially constant pressure during shrinkage and irrespective of the .extent or variation of reduction of volume thereof, substantially as described.

6. In a drying kiln shrinkage take-up device, a dry kiln truck for supporting a stack of bodies to be kilned and provided with fixed stakes for engaging'the stack on one side thereof, a plurality of movable stakes on said truck for engaging the stack on the other side thereof, and a spring for each movable stake to force the latter against the stack and compress the stack under a substantially constant pressure during shrinkage and irrespective of the extent or variation of reduction of volume thereof, substantially as described.

7. In a drying kiln shrinkage take-up device, a'dry kiln truck for supporting a stack of bodies to be kilned and provided with stakes engaging the stack on one side thereof, movable stakes engaging the stack on the opposite side thereof, and spring devices connected with the ends of the movable stakes for subjecting the stack to a substantially constant pressure between said stakes during shrinkage reduction of volume of the stack, substantially as described.

8. In a drying kiln shrinkage take-up device, a dry kiln truck for supporting a stack of bodies to be kilned and provided with stakes engaging the stack on one side there'- of, movable stakes for said truck for engagement with the opposite side of said stack, spring devices connecting the ends of the first named and movable stakes to compress the interposed stack during shrinkage, and spring devices connected with the truck an with the remaining ends of the movable stakes for maintaining the latter in pressure engagement with the stack during shrinkage, substantially as described.

9. In a drying kiln vice, means for supporting the material to be kilned and provided with a fixed stake and a movable I-beam stake for engaging the material on opposite sides thereof, and a tie line device connected with the fixed stake and having a forked fastener straddling the web of the I-beam stake and provided with portions for engagement with the oppositely disposed flanges of said beam to releasably hold said fastener on said beam, substantially as described.

10. In a drying kiln shrinkage take-up device, means for supporting the material to be kilned and provided with fixed stakes for engaging the material on one side and shrinkage take-up defor engagement engaging side thereof, and the tops of the fixed and movable stakes and comprising a' -link chain connected. with movable stakes, and a spring connected with intermediate links of said chain, substantially as. described. 7 I

In a drying kiln shrinkage take-up device,- a bolster for supporting the material to be kilned, a stake socket fixed to said bolster, a stationary stake insertible in said fixed socket for engaging the material on one side thereof, a socketslidable on said i V bolster, a sta e insertible. in said slidable socket for engagement with the material on the opposite side thereof, and means actuating said slidable socket to hold the stake of" the latter in follow up pressure engagement with the material to maintain the latter under substantially constant pressure be tween said stakes, substantially as described.

12. In a drying kiln shrinkage take-up device, a bolster to be kilned and provided with a fixed stake with the material on one side thereof, a socket slidable in said bolster, a stake insertible in said slidable socket for engagement with the material. on the opposite side thereof, and means actuating said slidable socket to hold the stake thereof in follow up pressure engagement with the material to maintain the latter under substantially constant pressure between said stakes, substantially as described. a

13. In a drying kiln shrinkage take-up device, a bolster for supporting the material Copies of this patent may be obtained for five cents each, by Washington, D. C.

said fixed andv forsupporting the material,

to be kilned and provided with a fixed stake for engagement with the material on one] side there0f,-a sooketslidable in'the bolster,

a stake insertible in saidslidable socket for engagement with the material on the opposite side thereof, I slidable socket and its stake away from thematerial, to load theilatter, andnieans actuating the slidable socket to engage its stake, with the material, substantially as described, 14. In a drying kiln shrinkage take up device, a bolster for supporting the material tobe kilned and having means engagingthe material on one side thereof, said bolster being formed of parallel members, a cap rigidly connected with the ends of said members and'having portions engaging said members to'hold the same in spaced relation, a socket slidable between and supported on, said members, a, stake insertible in said socket" for engagement with the material to compress the same against said means, an adjusting device associated with said socket and cap to move and hold th-eformer away from the material, and means connectedwith said socket and bolster for actuating the former to hold its stake in substantially constant pressure engagement against the material, substantially as described.

In testimony whereof we tures in presence of two witnesses.

ADAM H. IRVING.

DANIEL R. TANNER.

Witnesses:

NELLIE HILLS, O. H. FINN.

addressing the Commissioner of Patents,

means for holding said i' 

